Friend, G., & Zehle, S. (2004). Guide to business planning. Economist in association with Profile Books.
Dyfyniad Arddull ChicagoFriend, Graham, and Stefan Zehle. Guide to Business Planning. London: Economist in association with Profile Books, 2004.
Dyfyniad MLAFriend, Graham, and Stefan Zehle. Guide to Business Planning. Economist in association with Profile Books, 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.